77539141 has 8 divisors (see below), whose sum is σ = 80999424. Its totient is φ = 74086320.

The previous prime is 77539139. The next prime is 77539201. The reversal of 77539141 is 14193577.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77539141 - 2¹ = 77539139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77539141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77539841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35676 + ... + 37786.

It is an arithmetic number, because the mean of its divisors is an integer number (10124928).

Almost surely, 2^77539141 is an apocalyptic number.

It is an amenable number.

77539141 is a deficient number, since it is larger than the sum of its proper divisors (3460283).

77539141 is a wasteful number, since it uses less digits than its factorization.

77539141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731.

The product of its digits is 26460, while the sum is 37.

The square root of 77539141 is about 8805.6312096294. The cubic root of 77539141 is about 426.4227125788.

The spelling of 77539141 in words is "seventy-seven million, five hundred thirty-nine thousand, one hundred forty-one".